2ICI

Crystal Structure of Streptococcal Pyrogenic Exotoxin I

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP			VAPOR DIFFUSION, HANGING DROP

Crystal Properties
Matthews coefficient	Solvent content
2.01	38.73

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 30.864	α = 90
b = 80.441	β = 99.51
c = 43.054	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100				2006-05-03	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F2	0.97903, 0.97942, 0.96418, 0.97795	CHESS	F2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.56	50	98.8	0.041	28.6	3.52		57515	1	1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.56	1.62	91.3		0.129	7.7	3.1	5551

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.56	22.38	29279	29279	1489	99.5	0.178	0.178	0.176	0.227	RANDOM	19.351

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
0.06		0.05	-0.06		0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.348
r_dihedral_angle_4_deg	21.328
r_dihedral_angle_3_deg	13.64
r_dihedral_angle_1_deg	7.581
r_sphericity_free	4.218
r_sphericity_bonded	3.256
r_scangle_it	3.024
r_scbond_it	2.123
r_mcangle_it	1.676
r_rigid_bond_restr	1.333
r_angle_refined_deg	1.324
r_mcbond_it	1.147
r_nbtor_refined	0.315
r_nbd_refined	0.231
r_symmetry_vdw_refined	0.22
r_symmetry_hbond_refined	0.214
r_xyhbond_nbd_refined	0.192
r_chiral_restr	0.098
r_metal_ion_refined	0.057
r_bond_refined_d	0.01
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1834
Nucleic Acid Atoms
Solvent Atoms	299
Heterogen Atoms	1

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
SOLVE	phasing